They aren't just empty. Because there is no termination on each if, the next if is the conditional statement for the one before it. They all have to be true for the ear wiggle code to execute.
It's the same as saying
if ((ps2x.Button(PSB_L2)) && (ps2x.Button(PSB_L3)) && (ps2x.Button(PSB_R2)) && (ps2x.Button(PSB_R3)) && (ps2x.Button(PSB_GREEN)) && (ps2x.ButtonPressed(PSB_RED)) && (ps2x.ButtonReleased(PSB_PINK)) && (ps2x.NewButtonState(PSB_BLUE)))
{
moveservo(3,255); // ear wiggle
delay (200);
moveservo(3,0); // ear wiggle
}